DOX system (DOX-60F/DOX-30F) rapidly evaluates the total number of microorganisms, coliforms and Escherichia coli

Principle of counting bacteria: What is the oxygen electrode method?


Since oxygen is dissolved in the culture medium, the following chemical reaction will occur in DOX cell cartridge equipped with electrodes:

O2+4H++4e- = 2H2O


This reaction generates a small amount of electric current at the electrodes.  By measuring a change in the amount of current, the change in the dissolved oxygen concentration will be known.



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